A tilde is created in LaTeX by a command. You can find out which command this is and how it works here..
The tilde (~) is a character in the form of a horizontal wavy line. The character is reserved in LaTeX for a non-breaking space. If you want to use the tilde as a punctuation mark in your body text, you have to enter a command. Read on to find out which commands you need to know.
With instructions and commands you can create characters and formatting in LaTeX. You can generate the special character of the tilde as follows:
$\tilde{}$
$\tilde{a}$
$\widetilde{abc}$
\textasciitilde
\~{}